The floor plan of the second floor of profile.aryion.com/profile/Koopat house.
again, all doors open as marked, and each room (besides room B) has at least one window. (unmarked)

Rooms:
A- second floor hall/balcony
B- Storage closet
C- Koopat's room
D/E/F- Unused, empty rooms

Features:
1- Random useless junk
2- Koopat's bed
3- Koopat's Dresser
4/6/8- Unused, tattered beds
5/7/9- Old, broken dressers

As you can see, there's not much here, which is why Koopat and the others usually try to keep "guests" off this floor; it's boring and distracts from the haunting.

Floor transport: (click the marker to go to that floor)
i__- Staircase to first floor